diff options
Diffstat (limited to 'em-format/e-mail-stripsig-filter.c')
| -rw-r--r-- | em-format/e-mail-stripsig-filter.c | 165 |
1 files changed, 165 insertions, 0 deletions
diff --git a/em-format/e-mail-stripsig-filter.c b/em-format/e-mail-stripsig-filter.c new file mode 100644 index 0000000000..e861a13a53 --- /dev/null +++ b/em-format/e-mail-stripsig-filter.c @@ -0,0 +1,165 @@ +/* + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with the program; if not, see <http://www.gnu.org/licenses/> + * + * + * Authors: + * Jeffrey Stedfast <fejj@ximian.com> + * + * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) + * + */ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <stdio.h> +#include <string.h> + +#include "e-mail-stripsig-filter.h" + +G_DEFINE_TYPE (EMailStripSigFilter, e_mail_stripsig_filter, CAMEL_TYPE_MIME_FILTER) + +static void +strip_signature (CamelMimeFilter *filter, + const gchar *in, + gsize len, + gsize prespace, + gchar **out, + gsize *outlen, + gsize *outprespace, + gint flush) +{ + EMailStripSigFilter *stripsig = (EMailStripSigFilter *) filter; + register const gchar *inptr = in; + const gchar *inend = in + len; + const gchar *start = NULL; + + if (stripsig->midline) { + while (inptr < inend && *inptr != '\n') + inptr++; + + if (inptr < inend) { + stripsig->midline = FALSE; + inptr++; + } + } + + while (inptr < inend) { + if ((inend - inptr) >= 4 && !strncmp (inptr, "-- \n", 4)) { + start = inptr; + inptr += 4; + } else if (!stripsig->text_plain_only && + (inend - inptr) >= 7 && + !g_ascii_strncasecmp (inptr, "-- <BR>", 7)) { + start = inptr; + inptr += 7; + } else { + while (inptr < inend && *inptr != '\n') + inptr++; + + if (inptr == inend) { + stripsig->midline = TRUE; + break; + } + + inptr++; + } + } + + if (start != NULL) { + inptr = start; + stripsig->midline = FALSE; + } + + if (!flush && inend > inptr) + camel_mime_filter_backup (filter, inptr, inend - inptr); + else if (!start) + inptr = inend; + + *out = (gchar *)in; + *outlen = inptr - in; + *outprespace = prespace; +} + +static void +filter_filter (CamelMimeFilter *filter, + const gchar *in, + gsize len, + gsize prespace, + gchar **out, + gsize *outlen, + gsize *outprespace) +{ + strip_signature ( + filter, in, len, prespace, out, outlen, outprespace, FALSE); +} + +static void +filter_complete (CamelMimeFilter *filter, + const gchar *in, + gsize len, + gsize prespace, + gchar **out, + gsize *outlen, + gsize *outprespace) +{ + strip_signature ( + filter, in, len, prespace, out, outlen, outprespace, TRUE); +} + +/* should this 'flush' outstanding state/data bytes? */ +static void +filter_reset (CamelMimeFilter *filter) +{ + EMailStripSigFilter *stripsig = (EMailStripSigFilter *) filter; + + stripsig->midline = FALSE; +} + +static void +e_mail_stripsig_filter_class_init (EMailStripSigFilterClass *class) +{ + CamelMimeFilterClass *mime_filter_class; + + mime_filter_class = CAMEL_MIME_FILTER_CLASS (class); + mime_filter_class->filter = filter_filter; + mime_filter_class->complete = filter_complete; + mime_filter_class->reset = filter_reset; +} + +static void +e_mail_stripsig_filter_init (EMailStripSigFilter *filter) +{ +} + +/** + * e_mail_stripsig_filter_new: + * @text_plain_only: Whether should look for a text/plain signature + * delimiter "-- \n" only or also an HTML signature delimiter "-- <BR>". + * + * Creates a new stripsig filter. + * + * Returns a new stripsig filter. + **/ +CamelMimeFilter * +e_mail_stripsig_filter_new (gboolean text_plain_only) +{ + EMailStripSigFilter *filter = g_object_new (E_TYPE_MAIL_STRIPSIG_FILTER, NULL); + + filter->text_plain_only = text_plain_only; + + return CAMEL_MIME_FILTER (filter); +} |